I consider myself—after being a bit of a jack of all trades—to be a researcher and interaction designer or user experience architect. (My rant about research is on the Research Overview page.) Not all of the interaction designer work generates visual artifacts, or even any tangible artifacts at all. Sometimes after doing the research but before making a wireframe, the meat of what happens is conversation. With product owners/managers, with business analysts, with developers and quality assurance staff, there is a delicate dance to soften the enthusiasm for bad ideas and promote good ones, using data if possible, common sense if data is scarce and always with respect and openness to hearing another viewpoint.
It seems pointless or at least difficult to try to document in a portfolio site the conversations and meetings I have had with all those stakeholders on various projects. That said, there are some cases that I can present on these pages with artifacts that are worth glancing at. You can look at them.
But I encourage you also to speak with me and see if I would be the kind of person you would like to talk to about an idea you have for a feature and the people who would use it. Be prepared to answer my most common question, “What is the user trying to accomplish?”